US3603074A - Clockwork-time switch - Google Patents

Clockwork-time switch Download PDF

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Publication number
US3603074A
US3603074A US880171A US3603074DA US3603074A US 3603074 A US3603074 A US 3603074A US 880171 A US880171 A US 880171A US 3603074D A US3603074D A US 3603074DA US 3603074 A US3603074 A US 3603074A
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United States
Prior art keywords
baseplate
wheel
spring
hub
mechanism according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US880171A
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English (en)
Inventor
Wolfgang Ganter
Heinz Otto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MESSRS Gebr JUNGHANS GmbH
Original Assignee
MESSRS Gebr JUNGHANS GMBH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C23/00—Clocks with attached or built-in means operating any device at preselected times or after preselected time-intervals
    • G04C23/14—Mechanisms continuously running to relate the operation(s) to the time of day
    • G04C23/16—Mechanisms continuously running to relate the operation(s) to the time of day acting only at one preselected time or during one adjustable time interval

Definitions

  • a lockwork mechanism i5 provided having a 53/7- 58/52 return locking spring disposed between a baseplate and an ad- [Sl Int. Cl G04b 29/04 justmem wheel f the device The adjustment wh
  • the invention relates to a clockwork-time switch, especially where the switch is provided with an electric switching contact.
  • a baseplate customarily developed itself as a dial or if need be carrying such a dial, is located in front of the front plate of the clockwork frame. Between these two plates is the timer gear.
  • the invention is based on the task of housing the timer gear, in the case of a clockwork-time switch, within a frame design which is as small as possible a space.
  • the in vention is concerned with a rugged timer gear and an arrangement for protecting it from damage through incorrect operation, especially through the winding for adjustment in the wrong direction.
  • the invention is characterized in that, coaxially in relation to the hole in a baseplate which receives the shafts of the hands, on the rear, and preferably sunk into this baseplate a return locking spring shaped like annular disk is seated.
  • This spring resists torsion imposed through it on the baseplate and has at least one locking arm tangentially bent out of the plane of the disk with a radial locking edge.
  • An adjusting wheel including a return lock cogged surface engage with the locking edge rests, via an annular shaped gliding zone, preferably on the baseplate.
  • This adjusting wheel is mounted by means of a barrel hub in the baseplate hole for the shafts for the hands. The back side of this adjusting wheel is acted upon resiliently by an hour wheel.
  • the hour wheel is coaxially mounted in the adjusting wheel by means of a barrel hub. Cooperating cams and openings have been provided partly on the adjusting and partly on the hour wheel.
  • the hour wheel will engage a releasing spring in the direction of the adjusting wheel.
  • This spring extends across the front plate and is developed in a straight line and symmetrically to its longitu dinal axis.
  • This spring is fixed, on the front plate with torsional strength and in a shiftproof manner, preferably seated in the latter. It carries devices for an effective connection with the signal control means and has in its middle part a lead aperture for the minute shaft.
  • a clockwork mechanism with a balance wheel regulator one can advantageously make use of the bearing bolt of the upper bearing to fix the releasing spring.
  • the resilient barrel hub of the releasing wheel has been slit longitudinally so as to be radially resilient. At the end of this hub there are lateral projections. In the case of a radially compressed hub these projections lie on a smaller diameter than that of the hole of the shafts of the hands in the baseplate while they radially expand after passing through this hole to axially engage the front side of the baseplate. Further more, the adjusting hand has, on its point of attachment, projections which fill the slits in the hub in a positively locking manner.
  • the adjusting wheel is made of a plastic material, likewise the hour wheel and the baseplate.
  • headed pegs can be provided on the rear side of the baseplate or some similar means, in order to attach thereon a contact spring cooperating with the releasing spring.
  • the releasing spring itself is provided, at its end serving for the purpose of switching, with some means for the mechanical coupling with the spline shaft of a time-interrupter gear system known per se for an electric signal circuit and with means for the selective attachment of an electric switching contact.
  • the same releasing spring can be used whenever a switch clock or an alarm clock is made.
  • FIG. I provides a transverse sectional view ofthe timer gear ofa switch clock with electric switching contact
  • FIG. 2 supplements the illustration of FIG. 1, showing the development of the timer gear in the case of an electric battery alarm clock which is provided with an electrically operated alarm device, as viewed along section line 4--4 of FIG. 3;
  • FIG. 3 provides a top view of the front plate of the FIG. 2 assembly, where the baseplatc and the timer gear have been lifted from said front plate, i.e. as viewed along section line IIIIII of FIG. 2;
  • FIG. 4 provides a top view of the front plate of the clockwise mechanism shown in FIG. I, with the baseplatc, the timer gear and the releasing spring being lifted off;
  • FIG. 5 illustrates the adjusting hand of FIG. I in plan view
  • FIG. 6 illustrates, in perspective, the return blocking spring of FIG. 1;
  • FIG. 7 illustrates, in perspective, the adjusting wheel ofFIG. 1.
  • the adjusting hand 15 is pressed in front onto the barrel hub or base 140.
  • the barrel huh 140 (FIG. 7) has been longitudinally slit at 14b and moreover has opposite radial projections 14c displaced by in relation to the slits 14b.
  • the radial projecting length of the projections 14c beyond the circumference of the hub 14a and the width of the slit [4b, have been chosen in such a way, that the hub of the adjusting wheel can be pushed through the hole of the shafts of the hands whenever it is compressed resiliently.
  • the projections 14c axially engage the baseplate 13 or a collar portion 13b thereof.
  • the hand 15 itself has on its eye aperture bosses 15a pointing inwardly. These bosses 15a laterally fill and enter the slits 14b in the barrel hubs.
  • the halves [40/140 of the barrel hubs Upon placing the hand IS on hub I4a, the halves [40/140 of the barrel hubs will not have a spring action any more toward the inside, i.e. radially inwardly, and the adjusting wheel 14 cannot be squeezed out toward the rear from the baseplate.
  • the baseplate 13 has been provided at point 13c with a disk-shaped recess 13c.
  • the diameter of recess 13c is somewhat smaller than that of the adjusting wheel I4, so that the latter may rest sliding on the baseplate on an annular zone in the neighborhood of the contiguous area of overlap of wheel 14 and plate 13.
  • the recess 130 has been provided for the purpose of receiving the disk-shaped return locking spring 16 (compare also FIGS. 4 and 6).
  • flaps I60 are provided in order to connect this locking spring, so it will have torsional resistant strength, with the baseplate. These flaps, pointing upwards, are bent out of spring 16 and engage corresponding perforations 1311 in the baseplatev
  • the locking spring [6 also has three, tangentially running, punched out and bent out, locking arms 16b, whose locking edges 16h run approximately radially in relation to the diskshaped bodies of the spring.
  • the barrel hub 17a of the hour wheel 17 is seated slidingly; (FIGS. I and 2).
  • the hour wheel, and its hub, is preferably made of a plastic.
  • the hub 17a of the hour wheel is penetrated by the minute shaft 18, on which the hub of the hour wheel will find partial guidance.
  • Adjusting wheel 14 and hour wheel I7 have been provided, in a known manner, and on the disk surfaces facing each other, with engaging earns 17! or engaging openings 14s.
  • the hour wheel I7 on its rear side, is acted upon by the releasing spring 19; (FKJ'S. 1, 2 and 3)
  • the releasing spring [9 has been developed symmetrically in relation to its longitu dina] axis.
  • bent flaps 19a and 19' At the end of spring I9, i.e. its point of attachment to plate lI, bent flaps 19a and 19': (FIG, 3), engage with corresponding perforations Ila and llb of the front plate II.
  • the releasing spring has a perforation 19c for penetration by the minute shaft 18. It further has a relief embossed rib [9d with which the releasing spring I) presses on thc lower side of the wheel disk of the hour wheel 17.
  • the releasing spring has been slit at 19f and has two buttonholeshaped perforations.
  • One such perforation 19g is intended for the reception of a contact pin 22 (FIG. I).
  • the other such perforation 19h is developed as an elongated hole for the reception of the end of the spline shaft 23-provided with an undercut coupling knob 23aof a time interrupter gearing, known per se in the case of electric alarm clocks and designated as a whole with numeral 24.
  • Such gcarings are provided because, as is well known, the reverse adjustment of the hour wheel (in this case l7) requires about a minutes increment between the engaging position foi releas ng the switching process or the alarm signal, and the locking position (FIGS.
  • the flap 240, on the arm 24d attached on the shaft 23, will come into engagement with the pegs 24a and (as illz strated but not in detail) be swung through a predetcr mined angle by the nearest peg 24a.
  • a contact attached to the arm 24d covers a counter contact seg ment, so that the signal circuit will be closed.
  • the clockwork mechanism illustrated in FIG. 2 is of conventional design; it is an electrical battery clockwork with a motor-balance wheel.
  • the customary change gear-drive is designated by 25/26, which provides the reduction in speed from the minute shaft 18 to the hour shaft 17.
  • a clockwork mechanism having a baseplate and a front plate carrying a dial and having time and release gearing disposed between the two plates wherein:
  • said baseplate is formed to define a hole for the insertion of a plurality of concentric shafts for mounting indicating hands;
  • a recess is formed on the rear side of said baseplate coaxial to the hole formed in said baseplate;
  • a return locking torsion spring is disposed within said recess
  • said spring being configured as an annular disk having at least one locking arm having a locking edge
  • said locking arm protruding tangentially from said disk and engaging a locking crown cogging formed on said adjustment wheel;
  • said adjusting wheel being formed with a barrel hub for rotatable mounting within the hole formed in said baseplate;
  • At least one indicator hand being mounted on said barrel hub
  • said adjusting wheel being rotatably and slidingly held against the annular surface of the baseplate adjacent to and defining said recess;
  • said hour wheel being formed with a hub disposed within an axial bore formed in said barrel hub of said adjustment wheel;
  • said hour wheel and said adjustment wheel being formed with engaging cams and slots for providing a torsional driving connection therebetween.
  • a clockwork mechanism according to claim I wherein said hour wheel comprises a plastic material.
  • a clockwork mechanism according to claim 1 wherein said baseplate consists ofa plastic material.
  • a clockwork mechanism according to claim 3 wherein attaching pegs are formed on the rear of said baseplate for mounting a contact member for connection with an electrical source;
  • said contact member being disposed in operable relationship with said alarm releasing spring.
  • said barrel hub of said adjusting wheel is formed with an axial slot
  • lateral projections being formed on the outer surface of said barrel hub and extending in a radial plane; said lateral projections having a diameter less than the diameter of the hole formed in said baseplate when said projections are resiliently pressed toward one another;
  • said projections being expandable to axially engage said barrel hub within the hole of said baseplate upon releasing the pressure on said projections;
  • said indicating hand mounted on said barrel hub being formed with inwardly directed projections for filling in said slot formed in said hub whereby said hub is locked within the hole of said baseplate and may not be released by pressing said projections toward one another until said inwardly directed projections of said indicating hand are removed from said slot.
  • said adjustment wheel consists of a plastic material.
  • a clockwork mechanism having an alarm-releasing spring:
  • said release spring urging said hour wheel against said adjustment wheel;
  • said release spring generally comprising a straight line leaf spring having one end affixed to the said front plate whereby said spring is cantilevered at the other end thereof;
  • said other cantilevered end of said releasing spring being operably connected with an alarm control means
  • said spring being formed with a generally centrally located aperture for the insertion ofa minute shaft.
  • a clockwork mechanism according to claim 7 wherein said alarm releasing spring is disposed at the one affixed end thereof about an upper bearing of a balance wheel.
  • a clockwork mechanism according to claim 7 wherein said alarm releasing spring at the other cantilevered end thereof is operably connected with a spline shaft of a time interrupter gear for an electric signal circuit.
  • a clockwork mechanism according to claim 7 wherein said alarm releasing spring at the other cantilevered end thereof is operatively connected with an electrical switching contact.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
US880171A 1968-11-29 1969-11-26 Clockwork-time switch Expired - Lifetime US3603074A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE6809258U DE6809258U (de) 1968-11-29 1968-11-29 Uhrwerks-zeitschalter

Publications (1)

Publication Number Publication Date
US3603074A true US3603074A (en) 1971-09-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
US880171A Expired - Lifetime US3603074A (en) 1968-11-29 1969-11-26 Clockwork-time switch

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US (1) US3603074A (de)
CH (2) CH514184A (de)
DE (1) DE6809258U (de)
FR (1) FR2024950A7 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50133168U (de) * 1974-04-18 1975-11-01
US3945192A (en) * 1973-09-28 1976-03-23 Gebruder Junghans Gmbh Gear enclosure for clocks
US4069658A (en) * 1975-12-22 1978-01-24 Rhythm Watch Co. Ltd. Alarm setting device for timepieces

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3015982A1 (de) * 1980-04-25 1981-11-05 Kieninger & Obergfell Fabrik für technische Laufwerke und Apparate, 7742 St Georgen Elektrische ausloesevorrichtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2008105A (en) * 1931-04-20 1935-07-16 Lawrence Electric clock
US2532599A (en) * 1947-09-15 1950-12-05 Bourquin Edgar Clock mounting means
US2564103A (en) * 1946-03-25 1951-08-14 Int Register Co Clutch construction
US2570539A (en) * 1947-08-09 1951-10-09 C J Hug Co Inc Movement to dial attachment for clocks
DE1171344B (de) * 1954-08-28 1964-05-27 Tavannes Watch Co Sa Weckeruhr
US3390599A (en) * 1964-05-11 1968-07-02 Sankyo Seiki Seisakusho Kk Music producing device for a music box and the like

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2008105A (en) * 1931-04-20 1935-07-16 Lawrence Electric clock
US2564103A (en) * 1946-03-25 1951-08-14 Int Register Co Clutch construction
US2570539A (en) * 1947-08-09 1951-10-09 C J Hug Co Inc Movement to dial attachment for clocks
US2532599A (en) * 1947-09-15 1950-12-05 Bourquin Edgar Clock mounting means
DE1171344B (de) * 1954-08-28 1964-05-27 Tavannes Watch Co Sa Weckeruhr
US3390599A (en) * 1964-05-11 1968-07-02 Sankyo Seiki Seisakusho Kk Music producing device for a music box and the like

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3945192A (en) * 1973-09-28 1976-03-23 Gebruder Junghans Gmbh Gear enclosure for clocks
JPS50133168U (de) * 1974-04-18 1975-11-01
US4069658A (en) * 1975-12-22 1978-01-24 Rhythm Watch Co. Ltd. Alarm setting device for timepieces

Also Published As

Publication number Publication date
FR2024950A7 (de) 1970-09-04
CH1645169A4 (de) 1971-04-30
DE6809258U (de) 1969-09-18
CH514184A (de) 1971-04-30

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